Unpredictable, unsettling and sometimes excruciating viewing, Tirza is nevertheless a deeply affecting account of one man’s descent into despair. Seeming at first to be a simple tale of a father’s search for his lost daughter, Tirza quickly becomes an uncomfortably dark exploration of parenthood, sexuality and the need to feel wanted. Director Rudolf van den Berg’s confident handle on the many layered plot means that we never lose faith in the story, however much we begin to question our increasingly unreliable narrator…